How to choose an oil-immersed transformer?

Oil-immersed transformer is a kind of variable voltage switching power supply that can provide adjustable working voltage to the load. It can be adjusted to a variety of power supply voltages suitable for use with electrical equipment. Therefore, with the development trend of the power supply system, the increase of the rated voltage and the expansion of the transportation volume, the oil-immersed transformer is widely used because of its small loss and low engineering cost.

So how do we choose the oil-immersed transformer that suits us?

1. The scope of working voltage: the scope of working voltage should consider the necessity of load machinery and equipment.

2. Short-circuit capacity: The volume of the oil-immersed transformer should be higher than the total volume of the overload, especially the AC current and load load also need to vacate the impact capacity during operation, which is generally 30-40% higher than the total volume of the load. . For example, it must have a volume of 40KVA and is a general pure resistive load, so you can use a 45KVA oil-immersed transformer. If it is AC current and load load, use an oil-immersed transformer of more than 60KVA.

3. Rated voltage: The rated current of the oil-immersed transformer is the large amount of current at high voltage in high overload operation. If it is AC current and load load, the capacity of 30 should be vacated.